Reserve supply-tank



A. W. CODD.

RESERVE SUPPLY TANK.

APPLICATION HLED MAR. 24. I920.

1,374,433. Patented Apr. 12, .1921.

51 vwentoz Ambmse WGOdd PATENT OFFICE.

AMBROSE W. CDDLD, OF SPOKANE, WASHINGTON.

I RESERVE SUPPLY-TANK.

Specification of Letters Patent."

Patented A r. 12, 1921.

Application filed March 2Q, 1920. Serial No. 368,276.

1 '0 all whom it may concern.

Be it known that I, Aumaosn W. Conn, a citizen of the United States, residing at Spokane. in the .county of Spokane and State of il'ushington, have invented certain new and useful Improvements in Reserve Supply luuks, of which the following is a specification.

lhe present invention relates to improvemeuts in reserve supply tanks for liquid fuel in connection with the internal come hustion engines of automobiles, motor trucks and similar vehicles.

By the utilization of the subject matter of my invention I provide an auxiliary tank within the main fuel supply tank which is readihly accessible from the exterior of both tanks. whereby whenthe supply in the main tank is exhausted the contents of the reserve tun]: may be emptied into the main tank and withdrawn from the main tank in usual manner.

By the special combination and arrangement of parts of my invention the reserve supply tank is necessarily filled by the operator before the main tank is filled, thus. insuring a reliable reserve supply in the main tank for emergency use. While the liquid fuel is being consumed from the main tank, it will be understood that the supply in the auxiliary or reserve tank is main' tained and isolated apart from the main supply and the consumption of the. mum supply does not affect the reserve supply.

With these ends in view the invention consists in certain novel combinations and arrangements of parts whereby the main supply tank is filled through, and 'suhsl quent to, the filling of the reserve supply tank. and whereby the fuel in the empty main tank may be replenished by novel means for emptying the reserve tank of its on-tents into the main tank, all as will he hereinafter described.

In the accompanying illustrated one complete example of the physilul enhodiment of my invention in which the parts are combined and arranged according to the best mode I have so far drawings I have devised for the practical application of the principles of my invention.

Figure l is a ver ical sectional view through a portion of a main fuel supply tzmh', illustrating therein the reserve supply tank forming the subject matter of the present invention.

Fig. 2 is a detail sectional view of a portron of the reserve sup 1y tank showing the parts in the position t my occupy when the tanks are being filled.

*Fig. I a top plan view of reserve supply tank closure. y l In the referred form of the invention as illustrate in the drawings I have shown a sullicient portion of the main tank 1 of an automobile or motor truck in which is carried the main fuel supply or gusolene for,

utilization with the motor or internal combustion engine thereof. and in tl. Lop wall of this metallic tank is formed a thickened or enlarged portion 3 forming an interim-1y threaded boss for the reception and retention of the auxiliary or reserve supply tank it. The reserve tank is preferably in the form of n cylinder, closed at the bottom and fashioned at its open top with thickened. walls to provide it bushing 5 having both interior and exterior threads. the latter to screw into the opeuing of the boss in the tank top.

The reserve supply tank is disposed in he main tnnl; as indicated in Fig. 1, reaching sulisln tiell x from the top of. the main tank to 1h:- hohom thereof. and supported in the to w nning in the main tank which is sub sliuuml tor the usual filling opening of the uuiin innit. I

Xvur rhe to of the reserve simply tank is arranged a series of ports or overflow openings (l. situate just beneath the top of the main tauk mr: helow the series of ports a cork, or amount flout 7 is supported on the surface of ,e "flafili nfi the reserve funk, to prev nt -ill3rl'l and mill. oi the gasolene from th rem rve tank lh mgh the ports to l a "v the mom tank. A send, molul screw cap or plug 8 is u. l-d L: close the upper open end of the reset-" tank. making a tight joint or fit in the tr r11 which is of course removed. as in Fig. 2 when the tanks are to he filled.

For the purpose of emptying the contents of the reser. tank into the main tank, when necessary, I employ a lift rod or bar 9, preferahly tuhul: r and open for venting the tank and supported in the screw cap. The cup or plop is centrally perforated to permil; guide: in rticnl movement of the lift rod. which may be elevated by grasping the outside knob 10 on its upper end and the rod or bar pulled upwardly throu h the perforatedca At its lower end tie lift rod is equi pe with a circular, flat head 11 of suite is construction 'and fixed rigidly on the bar, and of the required diameter to fit snugly in the reserve cylinder and permitlnovement therein. Thus the rod and its head are ada ted to function as a lift pulnp to lift the co umn of gasolene in the reserve cylinder and pass it through the overflow ports of the cylinder into the main tank, the flow of gasolene assin through the ports beneath the float whie is elevated by the pressure of gasolene from below. Thus as the stem or rod is lifted the contents are transferred from the reserve cylinder to the main tank, and should an of the liquid escape around the edge 0 the upwardly moving head and fall to the bottom of the cylinder, :1. reverse stroke of the lift rod and a second lifting of the head will lift the remaining liquid which passes through the valve openin 12 on the downstroke, and is prevented rom passing through the valve seat by the ball valve 13, on e upstroke or lifting stroke of the lift rod and its head.

For the purpose of filling the tanks, the cap or'plug is removed, and the lift head elevated as in Fig. 2, permitting the gasoene to flow into and first fill the reserve tank and then overflow through the ports 6 and fill the main tank. When the main supply is exhausted, the reserve supply is whereby, when the lift hem poured into the main tank by a gradual lifting of the column of gasolene as before described.

What I claim as new and desire to secure by Letters Patent is I. The combination with a main fuel supply tank having a threaded openin top wall, of an open end reserve sup tank secured in the opening and provide with upper overflow ports, a cured in the open end 0 the reserve tank, a hollow lift stein supported in the cap and a valved lift head on the lower end of the stem, normally located at the bottom of the reserve tank.

2. The combination with.a main fuel supply tank having a threaded opcnin v in its top wall, of an open end reserve supp y tank consisting of a cylindrical receptacle formed with a head boss adapted to screw into said threaded opening, a perforated cap screwed into the interiorof said head-boss, a hollow lift rod having a knob outside the tank and movable in said perforated cap, a round lift head fixed at the lower end of the rod, a valve port through said lift head and a ball valve for said port, a perforated float supported on the column of liquid in the cylinder, and said cylinder huvin r overflow orts lis elevate the contents of the cylinder is transferred to the tank. for the purpose described.

In testimony whereof I affix my si nature.

i sneer W. o no.

in its perforated cap 86- 

